Albion m



(No Modelj- A. lVI. ROUSE.

MACHINE EOE PULVEEIZING GEES AND OTHER MATERIALS.

No. 350,564. Patented out. 12, 1886.

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N4 PETERS Phn UNITED STATES PATENT OFFICE.

ALBION M. ROUSE, OF BOULDER, COLORADO.

-lVlACHINE FOR PULVERIVZING ORES AND OTHER MATERIALS.

SPECIFICATION forming part of LettersPatent No. 350,564, dated October 12, 1886.

Application tiled November 11, 1885. Serial No. 182,442. (No model.)

To @ZZ whom it 77mg concern:

Be it known that I, ALBION M. RoUsE, of the city and county of Boulder', inthe State of Colorado, have invented a certain new and useful Improvement in Machines for Pulverizaway.l Fig. II is a vertical section at II II,

Fig. III. Fig. III is a top view of the upper part of the machine, the mortar not being shown. Fig. IV is a top view of the mortar, the cylinder, and piston being removed. Fig.

Vis a detail horizontal section at V V, Fig.

II. Fig. VI is a horizontal section at VI VI, gig. II. Fig. VII is a sect-ion at VII VII,

My invention consists in the described construction and combinations of parts whereby rapid linear and slow rotary motion is given to a pestle in the mortar, and whereby the power used to elevate the pestle can be partially stored for use in the descent ofthe pestle.

1 represents the mortar." I do not confine myself to the form of mortar shown, as this may vary without essential change of the novel features of the machine.

2 is a hollow cylinder east upon or bolted to the mort-ar 1.

3 is the body of the pestle, having an axial chamber or bore, 4, closed at top by a head, 5, bolted to lugs 6 upon the pestle-cylinder. The head has a central hole, through which passes the piston-rod 7, carrying a piston, 8, capable of working a few inches in the bore 4.

9 are rubber springs or blocks, between the contiguous faces of which, and also between the contiguous faces of the end blocks and the ends of the piston, are interposed washers or facings 10, ot' leather or other similar material, one of which is secured to each end of each block, as shown. The rubber springs 9 (even when under pressure, as hereinafter described) are considerably less in diameter than,l the bore 4 of the pestle, so that they will not bind, but move freely therein, while the facings or washers 10 are but slightly less in diameter than said bore, so that they too may move freely in the direction of the axis of the bore, while at the same time confining the said spring-blocks against lateral displacement. Above the pis; ton 8 all of the springblocks and washers are centrally perforated for the passage of the piston-rod 7, while those below require no such perforation, and are preferably wit-hout it, although they may, if preferred, have holes through the central part to increase their elasticity. The leather facings are lubricated in the bore by dry pulverized graphite, which has the effect of polishing the surfaces that come in contact, and reduces the friction to a minimum. I have described my preferred construction of springs; but springs of any other character may be used. The piston 8 and springs 9 do not till the whole length of the chamber or bore 4, the piston having some lost motion in the chamber. In practice I im: part to the piston a six-inch stroke, and so proportion the parts that when the springblocks are in their normal or relaxed condition there shall be but four inches of space or lost motion through which the piston moves beforeit begins to exert its influence upon the pestle through the medium of the interposed spring-blocks, for the purpose hereinafter fully described. The upper end of the piston-rod is connected to the lever 11, which is composed of two parallel bars connected together bythe fulcrum-pin 12, and the wrist-pins13 and 14 of the piston-rod 7, and the connecting-rod 15. The

l lever 11 is fulcrumed on a block, 16, which is interposed between the two bars of the lever 11, andhas a proj eotion, 17, extending between the bars of th'e lever to hold the lever inline. The block 16 is adjustabl y secured between' two lugs, l8,projecting from the cylinder 2, the means of attachment being by two grip-bolts,

19, which pass through the lugs and through a vertical slot, 19X, in the block 16. The block 16 may be vertically adjusted after loosening the bolts 19, and when they are again made tight the block 16 is held rigidly in position. The connecting-rod l5 is forked at the uppere11d,and the two arms of the fork pass through the ends of the wrist-box 20, in which the wrist-pin 14 has bearing. arms passing through the box 20 are screwthreaded and carry nuts 2l and 22, bearing, respectively, against the top and bottom of the The parts of thel ICO box 20. This construction give means for the adjustment of the box 'upon the connectingrod. The purpose of making the lever l1 adjustable at the ends upon the fnlcrum-block and connecting-rod is for the adjustment of the piston as the stampshoe and anvil-block wear away, or new ones are supplied.

The machine is driven by belts upon the bal,- ance belt-wheels 23, which are upon a crankshaft, 24:. The wrist-pin 26 of the crank 25 is connected to the lower end of the connectingrod by a boX, 27. rIhe crankshaft has journal-bearing upon lugs 2S cast upon or bolted to the cylinder 2.

In 'order that the other parts of the machine may not be broken or strained by the momentum ot' the balance-wheels and the power of the belts, should anything arrest themotion of the machine, I make the rims of the balancewheels in separate pieces from the hubs and connect them by an adjustable friction device, which I will now describe. The' rim. of the drive or balance wheels is marked 29. 30 is an annulai- `flange or web extending inwardly from the rim. 3l is a flanged hub upon the crank-shaft,made with an annular recess to re cess to receive a ring, 33, of raw-hide, and to receive one side of the web 30. 32 is a disk, which .is connected to the fiange 31 by bolts 3l, near the center, the bolts passing through a circular plate, 35, and af rawhide disk, 36, which latter isin a recess of the metal disk 32. The disk 32 has a reccsslike the ann ular recess of the flange 3lY and for a similar purpose, namely, to receive a rawhide ring and one side of the web 30. Between the flanged hub 3l and the disk 32 is a disk, 37, of rawhide. The arrange ment is such that friction between the parts causes the crankshaft 24 to turn with the rim 29 under ordinary circumstances. X'Vhen, however, the rotationof the crank-shaft is stopped by accident, the rims continue to turn upon the hubs. rlhe degree of friction is regulated by the bolts 34. It will be seen that if no packing were employed the friction between opposing surfaces of t-he parts of the wheel in' cident to their relative rotation would be so great that the parts would soon become heated and swell to such an extent as to bind, thereby defeating the purpose of the invention. In order to avoid this defect in prior existing devices, I employ a packing of material softer than the surfaces between which it is interposed, whereby the heat generaled is reduced to a minimum, and the slight expansion of the parts resulting from the presence of thatlittle whose generation cannot be prevented, amply provided for.

33 is a revolving sleeve working in a recess of the cylinder' 2, and upon which the pestle works. Upon the inner side of the sleeve 3S is a feather, 39, which enters a vertical groove or seat, 40, in the side of the pestle. The ob- `ject is to allow the vertical movement of the shaft 43 carries a ratchet-wheel,44,engaged by pawl 45 suspended from the lever ll by a hanger, 4G, to which the pawl iis adj ustably hinged.

4-7 is a spring holding the pawl in contact with the ratchet-wheel. The construction is such that at each upward movement of the lever 11 the wheel Atl is turned the distance of one tooth. Thus the pestle will be slowly turned around. The pawl ishinged toa bracket, 48, which is adjustable on the hanger L16, so that when the lever 11 is adjusted upward or downward the pawl may be adjusted to its proper relative position with the ratchetwheel.V

To prevent sand getting between the cylinder 2 and pestle 3, I introduce a stream of water between them through the cup rtf). .Aunular grooves 50 are made in the cylinder to serve as distributors of the water on its way into the mortar. The sheet of water acts as a cushion, cutting off` the vibration of the pestle from the cylinder in great degree.

I do not desireto limit myself to the formation of the grooves 5() in the cylinder, for the reason that the same result may be accomplished by forming them in pestle.

I am aware that it is a common expedient to cool and eliminate as much as possible the friction between wearing surfaces by means ot' a current of water, and also that it has been proposed to provide the surface of a piston with longitudinal grooves which are supplied with water; but such are not the equivalent of my annular grooves. By the use of longitudinal grooves the water runs off too freely and does not form an effectual cushion between the wearing surfaces. By the use of annular grooves the p iston is completely sur rounded by a thin sheet of water which gradually tricklcs down from one groove to another. lt will be observed that the longitudinal groove 4:0 places the upper grooves, 50, in communication with each other, whereby they IOO IIO

are kept filled directly from the s\11 ply-pipe without depending upon the passage of water from one to the other between the surfaces ot' the pestle and cylinder. rllhis groove 40 does not extend downward far enough. to pass the lower end of the cylinder when the pestle is in its lowermost position, and hence it does not drain the grooves of water, as do all other devices of this character of which I am aware.

5l is the stamp-shoe, inserted in the bottom of the pestle-body in the usual manner.

52 is an ordinary mortandie or anvil. As the shoe and anvil wear away, the lever 1l. is lowered upon the eonnectingrod l5, and the fulcrum-block 16 is also lowered to compensate for the wear. Should the stamplshoe break or become detached from the body of the pestle, the crank 25 could not pass the lower center, and all rigidly-connected parts would stop 5 hence thenecessity of the described construction of the belt balance-wheels 23.

As to the reaction of the power in the operation of this machine, attention is called to the arrangement and movement of the parts,

IIS

ILES

and as this feature is a valuable one I will givesome points from tlie machines I now have in operation. The weight of the pestle is fourthundred pounds, and of the balancewheels two hundred pounds each. The wheels are driven at a speed of two hundred revolutions per minute with a two and one-half inch rubber belt on each wheel. In the upward movement of the piston the spring column above it is carriedy up to the head, resulting in compression of the springs until the power stored exceeds the weight of the pe'stle. The pestle will then move faster than the piston, and its momentum will carry it beyond the movement of the piston, which moves upward until the lower set of springs comes in contact with the piston while the piston is descending,resulting in the compression of the lower set of springs equal to the unspent momentum of the pcstle, which descends with great force, vowing to the momentum of the balance-wheels pressing the piston upon the lower springs and the reaction ot' the springs against the piston, aided by the weight of the pestle. The machine requires three horse power to drive it, and will in twenty-fourhours reduce ten thousand pounds of hard ore in water to pass through a forty-mesh screen. The marginal projection of the pcstlehead 5 forms a touch-point for working any feeding device. The mortar is shown with upright corner-pieces 53, of the requisite strength, and ending in tenons or studs 54, which pass through the base-flange of the cylinder 2, and have mortises for the passage of keys, by which the parts are attached together. The parts may be secured together in any other manner, or may be cast'in one piece. The sides of the hopper bottom slope toward the die or anvil. 0n one side is the hopper 54X, into which the broken ore isfedin any preferred manner.

56 is a gravitating gate., which is supported on trunnions 57, resting in bearings at the sides of the hopper. The upper end of the gate is weighted, so that it gravitates into the position shown in Figs. I and Il, while it swings toward a vertical position beneath the entering ore.

58 are gauzescreens, which are shown at three sides of the mortar. The screens 58 aresecured to rectangular frames 59, which bear against the corner-pieces 53, and are confined at theirv edges between vertical tianges 61, which project from the corner-pieces 53. These iiangcs G1 are perforated for the passage of latch bars or levers 60, each of which bears at one extremity against the frame 59,' and is provided at the other with a set-screw, 62, tapped therein and bearing against the corner-piece lt will thus be seen that by turning the screw in'such direction it will feed through the bar or lever 60. Its end will abut against the corner-piece 53, whereby the level' 60, being fulcrumed in the lange61,w1ll be rocked and its free end made to press against the frame 59 and hold the latter securely toits bearing. y

63 are plates,which hang outside the screens and' serve to deflect downward the slime after it passes through the screens.

I do not confine myself to the brackets 18 and 2S when the same are made upon or fast to the machine, for the fulerumbearing of the lever and the bearing of the crank-shaft may be on supports separated from the cylinder of the machine.

-I claimy v 1. The combination, with the mortar 1, of the pestle 3, having the longitudinal groove 40, the cylinder 2, having the annular grooves 50,and the water-feed, substantially as and for the purposes set forth. A

2. The combination, with the pestle 3, of th working-lever 1l, formed of parallel bars, as described, means for connecting said pestle and lever, the fulcrum-block 16, having the 'projection 17,` and the mechanism for operatthe pawl 45, depending :from the working-l: 4

ver, as set forth.

5. The balance-wheel having a hub composed ot' a iixed disk, 3l, adjustable disk 32, adjustingscrews 34, engaging the disks to gether, the rim 29, having web 30, and suitable friction-pa'cking between the disks and web 30, for the purpose set forth.

6. The combination of lever 11,l fnlcrnnr block 16, with extension 17, crank 25, balance belt-wheels 23, connecting-rod 15, lever piston-rod 7, piston 8, springs 9, pestle 3, cylinder 2, and mortar 1, substantially as set forth.

7. The combination ofthe operating-piston 78 and the pestle 3, having a chamberlconw taining the pistonhead,and springs above and below the piston-head,with space for lost motion between the piston-head and the springs, substantially as set forth.

ALBION M. ROUSE.

In presence of-e EDMUND J. BoRDEN, ALBION E. RoUsE.

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